CHATTANOOGA, Tenn. — A toxicology report for Johnthony Walker, who was driving the school bus that crashed into a tree and killed five children, showed there were no drugs or alcohol in his system, Chattanooga Police said Wednesday.

via Chattanooga Police: Bus driver had no drugs or alcohol in system —

Police also said no witnesses confirmed a victim’s mother’s report that Walker said “Are you ready to die?” before the crash.

No children were ejected from the bus, police said.

Police obtained footage from the bus and are reviewing it now. They said there is a lot of physical and testimonial evidence they are going through.